Fluoroscopy Training and Safety Questions With Complete
Solutions
_____________ are used to further restrict the X-ray beam so
that it can be limited to a specific area of the patient anatomy.
Correct Answers Lead Collimator blades
Anode Correct Answers - Electrons strike the metal anode
where they create X-rays
Cathode Correct Answers - Source of free electrons. Electrons
leave the cathode and are accelerated toward the anode where
they create X-rays.
Dose ________ as magnification increases Correct Answers
Increases
How can blooming affect the X Ray image? Correct Answers It
can reduce contrast and obscure nearby anatomy
If the Field of View is decreased from 24cm to 12 cm, the
detector dose rate will _________ by a factor of 2 Correct
Answers Increase
What are the advantages of a Flat Panel Detector over XRII?
Correct Answers - Less bulky profile (easier to work around
and achieve steep gantry angles)
- Distortion free images w/ no artifacts
- Availability of advanced imaging techniques such as rotational
angiography and cone beam CT
- Requires less detector dose than XRII
, - Dose increase w/ magnification is less steep
What are the advantages of pulsed fluoroscopy? Correct
Answers - Improved image quality
- Decreased radiation dosage
What are the factors that affects radiosensitivity? Correct
Answers - Rate of Division
- Level of Differentiation
- Metabolic Activity
What are the primary components of the X Ray tubing? Correct
Answers - Tube housing
- Cathode & Anode
- Collimator
What are the three Cardinal Rules of Radiation Protection?
Correct Answers 1. Time
2. Distance
3. Shielding
What can "collimating down" or "coming down" do for the
patient? Correct Answers - Reduces patient radiation exposure
- Reduces the amount of radiation to which operator and staff
are exposed
What can correct blooming? Correct Answers Tight collimating
to cover bare or highly transmitting areas of the image
What does a septa do? Correct Answers It can absorb most of
the scattered x rays
Solutions
_____________ are used to further restrict the X-ray beam so
that it can be limited to a specific area of the patient anatomy.
Correct Answers Lead Collimator blades
Anode Correct Answers - Electrons strike the metal anode
where they create X-rays
Cathode Correct Answers - Source of free electrons. Electrons
leave the cathode and are accelerated toward the anode where
they create X-rays.
Dose ________ as magnification increases Correct Answers
Increases
How can blooming affect the X Ray image? Correct Answers It
can reduce contrast and obscure nearby anatomy
If the Field of View is decreased from 24cm to 12 cm, the
detector dose rate will _________ by a factor of 2 Correct
Answers Increase
What are the advantages of a Flat Panel Detector over XRII?
Correct Answers - Less bulky profile (easier to work around
and achieve steep gantry angles)
- Distortion free images w/ no artifacts
- Availability of advanced imaging techniques such as rotational
angiography and cone beam CT
- Requires less detector dose than XRII
, - Dose increase w/ magnification is less steep
What are the advantages of pulsed fluoroscopy? Correct
Answers - Improved image quality
- Decreased radiation dosage
What are the factors that affects radiosensitivity? Correct
Answers - Rate of Division
- Level of Differentiation
- Metabolic Activity
What are the primary components of the X Ray tubing? Correct
Answers - Tube housing
- Cathode & Anode
- Collimator
What are the three Cardinal Rules of Radiation Protection?
Correct Answers 1. Time
2. Distance
3. Shielding
What can "collimating down" or "coming down" do for the
patient? Correct Answers - Reduces patient radiation exposure
- Reduces the amount of radiation to which operator and staff
are exposed
What can correct blooming? Correct Answers Tight collimating
to cover bare or highly transmitting areas of the image
What does a septa do? Correct Answers It can absorb most of
the scattered x rays
